Furnace



FURNACE D. F. JNES ET AL Filed Jan. 11., 1943 Sheets-Sheet l May 14,1946. D. F. JONES ETAL FURNACE f Filed Jan. ll, 1943 liASheets--Sheeet 2.mmm

Emy M, 1946. D. F. JONES ETAL 2,400,150

- FURNACE Filed Jan. 11', r1945 4 sheets-sheet 5 a', N i 'e N N m N N Wil hl] E L f N my N N w 'q L, 1^Amaawwwmwmwj D T1 9. LL.

INVENTOR. a/e/ .fa/V55' BY .fw/wv m4 /V/af? EAMJEM May 14, 1946. D. F.JONES ETAL.

' FURNACE Filed Jan. 11, 1943 4 Sheets-Sheet 4 Patented May 14, 19462,400,150 A FUaNAcE Don F. Jones, John W. Miller, and Basil D. Figg,

Lansing, Mich., assigncrs to Motor Wheel Corporation, Lanslng, Mich., acorporation of Michigan Application January 11, 1943, Serial No. 471,956

3 Claims.

, This invention relates to furnaces and more particularly to the outercasings therefor.

The principal object of the invention lato provide a furnace casingcomposed of a. plurality of sections, some of which are interchangeablewith each other so as to provide for readily varying the size oi thecasing to accommodate difierent interior arrangements of the heatexchanger.

Another object of the invention is to provide a furnace casing of simpleand economical construction.

A still further object of the invention is to provide a furnace casingcomposed of a plurality of parts, some of which are of identicalconstruction.

These objects are attained by providing a front section, a centersection, a back section, means detachably connecting the front andcenter sections together, and additional means detachably connecting theback and center sections together. The back section is so constructedthat it is interchangeable with the center section when the latter isremoved, thereby forming from parts of the larger casing a casing ofsmaller size.

These objects willmore fully appear in the following speciilcation, whenread in connection with the accompanying drawings, wherein.:

Figure 1 is a front elevational view of a furnace embodying theinvention;

Figure 2 is a side elevational view of the same;

Figure 3 is a top plan view of the furnace;

Figure 4 is a cross-sectional view taken on substantially the line 4-4of Figure 2;

Figure 5 is a cross-sectional view similar to Figure 4 showing amodified form of the furnace casing formed by omitting a portion of thefurnace shown in Figures 1 and 4;

Figure 6 is a cross-sectional view taken on substantially the line 6 6of Figure 3;

Figure 7 is a cross-sectional view taken on substantially the line 1-1of Figure 1; and

Figure 8 is an exploded pictorial view of one n corner of the furnacecasing.

The furnace casing shown in the drawings is composed of a number ofsheet metal parts I detachably secured together. Briefly, the casing ,ican be said to consist of five vertical sections,

a front section A, a center section B, a back section C, a frontintermediate section D, and a rear intermediate section E. A11 of thesesections are detachably` secured together. This particular constructionprovides a furnace casing such as that shown in Figures 1 to 3 whereinthe heat exchanger proper is located in one part of the casing andforced air circulating apparatus, consisting of a blower, filters, andthe like, is located in another portion of the casing, or by the elimi-Vnation of Sections B and E and the substitution of Section C forSection B a casing can be provided which holds only the heat exchangerproper. The details of the construction by which this desired result isobtained will more fully appear hereinafter. i

The front section A comprises a pair of identical front corner posts I0,a front top rail II, two identical corner caps I2, a front panel I3, anda door I4. The corner posts are of arcuate crosssection and are providedat their upright edges with laterally extending inwardly offset flangesI5 (see Figure 8). The fianges I5 are offset inwardly a considerabledistance for a reason which will presently appear. At the upper end ofeach corner post I0 is a flange I6 also inwardly offset a distanceapproximately equal to the thickness of the sheet metal used in theconstruction of the furnace casing.

The front top rail II is provided at its lower edge with an inwardlyoffset flange I'l. 'I'his flange is offset the same distance as flangesI5 on the corner posts. At its upper' edge the rail I I is provided witha. vertical flange I8.

The corner caps I2 are identical with each other and are constructed asbest shown in Figure 8. They are of generally spherical character andare provided at two edges with inwardly offset flanges I9. The flangesI9 are offset a distance equal to the thickness of the metal used informing the casing.

The front panel I 3 is a rectangular sheet metal structure provided wtihflanges 20 about its perimeter. The width of the flanges 20 is equal tothe distance that the flanges I5 and I1 are offset from the corner postsI0 and the front rail II. The panel I3 is provided with a relativelylarge door opening to provide access to the interior of the casing. Thedoor opening is closed by door I4 hinged to the panel and provided withlouvre-s to permit the circulation of air therethrough.

The corner posts, front rail, corner caps, and front panel are securedtogether by bolts or hardened screws inserted through the holes providedtherefor. The upright edges of the panel I3 are seated in the groovesformed by the offset flanges I5 while the upper edge is received in thegroove fonned by the flange I1. All edges of the panel I3 are flush withthe outer surfaces of the corner posts and front rail. The ends of therail, I I overlie the flanges I9 and lie ush with the exterior surfacesof the corner caps. The lower edges oi the comer oeps overiie the iengegt@ on the corner posts. T us, it 'si-iii be seen that all exteriorsurfaces, except the door id, ei'e flush with each other.

The center section B is composed oi e. pair ci upright posts 2i oigenerally chennebsbeoed cross-section provided with letersly extendingsnges 22 et its uptight edges. Secured to the upper ends o* the posts 2iis s cross rail having downwardly cul'ved end portions EG, theextremities of which ere inv/esdly offset et (see Figure 6). The sideedges oi the portions 2li are offset inwardly to forni flanges Maz.Entern mediate the end poitions the side edges of the rsil 3 ere tentveirticsllsr upward to provide iianges 25. in intermediate partition iiihsving en opening Iii; therein is secured st its ietere edges to theupright poste 2i st its snoer edge to the reii 253 by welding or othersuitable means oi securement.

The beck section C is generelig,7 similar 'to tile front section i buthas no door or doos opening. The back section comprises s. een of cornernoem 2S identical with the coi-nei` posts iii, s rear top rail 29, twocomer caps 3Q exsfstiy` like the cornes caps i2, and s beck panel. Si.mie pene); si has an opening 32 therein for the reception oi e fineoutlet, not shown. The corner 'posts 26, top rail 2s, corner caps s@ andbaci; pene! Si ere secured together by bolts or scietvs in the sen-iemanner es the parts forming the iront section it.

The iront and center sections A end is respectivelsy ere securedtogether the iront inter mediate section D. This section is composed. ofe pair of top side rails 353 oi genere-iv src-nete section, best shownin Figure 8. At their lower edges the rails Si? ere provided withinwardly ci?.- set iianges 34. At their upper edges are verticallyextending flanges The rails 353 are se tired; to the front corner capsit and the downwardly curved end portions 2d of the :coils 2S by boiteor screws. The front ends of the rails overlap the flanges i@ on theiront corner oeps iii ond thereby lie ush with the outer sin'feces oithe caps i2. The resi' ends oi the rails 3S also over lop snges Zta onthe cross rsii end lie nosh with the exterior surfaces oi the endportions of rails 23.

The front intermediate section iii also inoiudes s. pair of side poneisSi?. The side poneis sie of rectangular shape end ere provided shouttheir perimeters with inturned sienes@ The width of the flanges Si isequal to the distance that the flanges iii, 22 end il@ on the comerposts slid upright posts 2i are oiiset from the ente surfaces thereof.The panels @o footed in the grooves formed by the enges it?, joiningmembers end tiie'eiiy Trie outer Surfaces of those adjoining r panelstti are secured to the no. 323 by bolts or screws.

The resi intermedie tieily identicei te the D. It is composed ofidenticsliT in if. i" 33 and. side poneis @il oi 'side panels St.Ordinarily the mils 53S end side es the rails side tiene?. eitiiougiitheir length from very if desired. The center section and boei; seomanner flist the front interiori` iii` cured to the iront section A eenAll of the sections are attached to e s senting rs'soe in its resi edge,i site posed two .trames t6 rettangolo? ond Frome Si is composed of twosi o 'res'fnieiniier issn/sed of irons, ends of the members sse removesf sem to treme fifi so that o rigid. s-iietore i ln eeot freir e diiforms one side of i.

furnace cosine is composed o' o housing 'generally into two o iso' winedesigned 'to hcose e.. nest enz/.cy v end. e i pest designed to house s,blower, economiser ters end the like, ii such epps'setus is einemTT fipine to connect the heet exciienser omizer, if used, would entendthrough op; i ing 28 in the penei 2l.

If it desired to dispense with e blower, iitezs end econonizer, and engrother ports which woiid be housed within the beet'. part oi the torneo'Dcosine, the port of the casing which is empi to house the seme can neeliminated. To do ti the center section P, is diseonnecte .ttor-fi.front intermediate seeticn D oy removing tsching ineens that hold thepests bese freine ii is disconnected from the if frame QQ. The beensection C is disoonneose from the reer intermediate section Tite sectionC is then slipped into piece and is seem by bolts or sci'ews to the reesoi the iront ii mediate section D, thereby forming e fui'nsce l ing forthe heet exchanger sione of 1y heli the cubiool content oi the furnacepi'eviousiy tieesrioed. 6%

The edvanteges of the foregoing construett-fn wiii be i'esdiiy finement.Onis? .s mi; .n n*

er oi ports, many oi' which sie identicsi with. each other, need beemployed to manufacture et the motori.r either size oi furnace casino.Thus, ii the seeing to accommodate oniy e, changer is required, onlythose pests need be i Emst-red, ii it is desii'ed later to edd teefciency of the heating unit by sdfiinge, blower, lter and eoonomizer,the oniy ports thst one eesery to convert the furnaceY casing ere thosepests forming the center section B and. the i: intei'niediete section E.On the other Elend, i en? s'esson s. complete lesse size mi if;instelled ond it desired to eiiininste e. p thereof, no new seits needne puronesed s A stalled. Thus, the invention desoribeo he. provides eneconomics! Ineens i'or readily ede. ing the furnace cosine to eithertype oi equipment desired.

Trie scope ci the invention is insiicetesi appended oieims.

We simio:

i. fi furnace casing comprising s. iro" forming: the entire iront `wellof the it ing end having outwe-riiy end iesrwsely section forming theentire beck weil nece end having orwerdiy to bottom seid iurnece cosine,seid. center ses: 'tion heving forwardly outwardly raboets in its irontedge and reefs/army snel ontn wordigr presenting rebiiets in its ircintermediate section loetween the iont and ce "i robinets in ti? ente insaid back section AMomo front intermediate section.

casing u defined in claim 1 whencomprlseg n trame of len- 2. furnace muytilted 3 annular cross-section and a. back wall sethereto s. A furnaceming s dennen in claim 1 whereinmdnter section consists of a frame ofgeng orally U-shnned cross-section and an intermedi- :te partitionsecured thereto.

